The invention belongs to the technical field of membrane and relates to a photocatalytic
composite ceramic separation membrane using porous
ceramic membrane as a carrier, a method for preparing the same and application of the separation membrane. The method is characterized in that a porous
ceramic membrane substrate is used as the carrier to prepare hydroxyapatite
sol and argent-titania composite
sol through
sol-gel technology; and a carrier membrane is subjected to secondary sol-gel dipping,
drying and
roasting sequentially to obtain the argent-carried titania / hydroxyapatite photocatalytic
composite ceramic separation membrane with aperture of between 100 and 1,900 nm and
porosity of between 20 and 55 percent. The photocatalytic
composite ceramic separation membrane has biological adsorption and high photocatalytic activity and
membrane permeability, improves separation of the
composite membrane,
photocatalytic degradation and sterilization, has remarkable effects of decontamination and sterilization, reduces the loss of
porosity in the process of membrane preparation, has a simple preparation and application process, is easy for large-scale industrial production, integrates three units of membrane separation,
photocatalytic degradation and sterilization and reduces investment and occupied area.